. >> long live nelson mandela. long live. we appeal for those behind the stage to please tone down their singing. those behind the stage, please tone down your singing. mrs. zuma is on the stage. >> there's been a lot of singing all morning long in south africa. so many people want to express their joy and celebrate the life of nelson mandela, as terry moran has been saying. can you hear me now? the crowd there just -- just wants to express themselves and enjoy themselves. >> reporter: they sure do. this crowd is celebrating the life of nelson mandela. there's a sense of joy here. this is not mourning. this is pride, solidarity with each other. this is gratitude for the tremendous gift, and this is song, just as a country earlier on, the halls of the stadium were filled with crowds of men and women, the dancing and singing as they come through the halls of the stadium. and i was watching them and a man said to me, this is who we are as africans. we mark every passage of our lives in song. we grieve in song. we're happy in son